Question

An artificial satellite is moving in a circular orbit of radius
42250 km. Calculate its speed if it takes 24 hours to revolve
around the earth.
​

Answer 1

radius of orbit =42250 km

distance covered = circumference of the orbit=2πr

2×22/7×42250

time interval =24 hrs

=86400 sec

speed = d/t =2×22/7×42250/86400

=46475/15127=3.07km/ sec